Base may refer to:

• Base (chemistry), the "opposite" of acid

In computing:

• Google Base, an online database provided by Google
• OpenOffice.org Base, OpenOffice.org's database module

In mathematics:

• Base (mathematics), or radix, the number of digits in a positional numeral system, e.g. base 10
• Base (topology), a topological space; see also Subbase
• Base (group theory)
• Base (geometry), one of the parallel sides of a trapezoid; or the side of a triangle opposite the vertex which the triangle's altitude goes through.

In politics and government:

• Base (politics), a group of voters who almost always support a single party's candidates
• More than one meaning in the calculation and collection of tax; see also Cost basis
• Islamic Extremist group Al-Qaeda is literally translated 'The Base.'

In sport:

• Base (baseball), the 3 canvas bags and home plate
• BASE jumping

In architecture:

• The bottom of a building or other structure
• A part of some types of column, below the shaft
• A pedestal, supporting a statue or other item

In biology:

• Base pair, a pair of connected nucleotides on complementary DNA and RNA strands
• Nucleobase, the parts of DNA and RNA that are involved in forming base pairs.

A defined area that contains shelter, equipment, and resources:

• a area which supports human habitation in a hostile environment, such as a Moon base or a base in Antarctica
• a Military base, which provides shelter, military equipment and personnel

Other uses:

• base station, a medium to high-power multi-channel two-way radio which is in a fixed location
• BASE (mobile), a Belgium mobile telecommunications operator
• In a transistor, the base is the controlling connection to the junction.
• In paint or other materials, the base is the binder which holds the material together

See also

• Basic
• Basis
• Freebase

Base | Base | Base | Base | Base | בסיס | Zasada (chemia) | Base | Baza